package com.example.demo.service.impl;

import com.example.demo.service.MailService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;
import javax.mail.internet.MimeMessage;
import java.io.File;

/**
 * @author gyc
 * @date 2018/2/26
 */
@Service
public class MailServiceImpl implements MailService {
    private final Logger logger= LoggerFactory.getLogger(this.getClass());

    @Autowired
    private JavaMailSender mailSender;

    @Value("${spring.mail.username}")
    private String from;

    @Override
    public void sendSimpleMail(String to, String subject, String context) {
        SimpleMailMessage mailMessage=new SimpleMailMessage();
        mailMessage.setFrom(from);
        mailMessage.setTo(to);
        mailMessage.setSubject(subject);
        mailMessage.setText(context);
        try {
            mailSender.send(mailMessage);
            logger.info("简单邮件已发送");
        }catch (Exception e){
            logger.error("发送简单邮件时发生异常！",e);
        }

    }

    @Override
    public void sendHtmlMail(String to, String subject, String content) {
        MimeMessage message=mailSender.createMimeMessage();
        try {
            MimeMessageHelper helper=new MimeMessageHelper(message,true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            //开启HTML格式
            helper.setText(content, true);
            mailSender.send(message);
            logger.info("html邮件发送成功");
        }catch (Exception e){
            logger.error("发送html邮件时发生异常！", e);
        }
    }

    @Override
    public void sendAttachmentsMail(String to, String subject, String content, String filePath) {
        MimeMessage message=mailSender.createMimeMessage();
        try{
            MimeMessageHelper helper=new MimeMessageHelper(message,true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            //开启HTML格式
            helper.setText(content,true);

            File file=new File(filePath);
            String filename=file.getName();

            helper.addAttachment(filename,file);

            mailSender.send(message);

            logger.info("附件邮件发送成功");
        }catch (Exception e){
            logger.error("发送附件邮件时发生异常！", e);
        }
    }

    @Override
    public void sendInlineResourceMail(String to, String subject, String content, String rscPath, String rscId) {
        MimeMessage message=mailSender.createMimeMessage();
        try {
            MimeMessageHelper helper=new MimeMessageHelper(message,true);

            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content,true);

            File file=new File(rscPath);

            helper.addInline(rscId,file);

            mailSender.send(message);
            logger.info("嵌入静态资源的邮件已经发送。");
        }catch (Exception e){
            logger.error("发送嵌入静态资源的邮件时发生异常！", e);
        }
    }
}
